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tests: fix event_loop_timer_updates

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It may happen that there's some time between the first and the other timer expire.
If epoll_wait is called after the first timer expired and
the other not, it returns only one source to dispatch and therefore
the test fails. To fix that, sleep a while before
wl_event_loop_dispatch() to make sure both timers expired.

To be 100% sure, we could use poll() before calling
wl_event_loop_dispatch(), but that would need modification in libwayland
(need to get the source's fd somehow)

https://bugs.freedesktop.org/show_bug.cgi?id=80594

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Marek Chalupa 2014-08-19 12:03:48 +02:00 • committed by Pekka Paalanen
parent 12ec657014
commit b24fa4c821
1 changed files with 14 additions and 0 deletions
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14
tests/event-loop-test.c
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@ -240,6 +240,8 @@ TEST(event_loop_timer)
wl_event_loop_destroy(loop);
}
#define MSEC_TO_USEC(msec) ((msec) * 1000)
struct timer_update_context {
struct wl_event_source *source1, *source2;
int count;
@ -291,6 +293,18 @@ TEST(event_loop_timer_updates)
context.count = 0;
/* Since calling the functions between source2's update and
* wl_event_loop_dispatch() takes some time, it may happen
* that only one timer expires until we call epoll_wait.
* This naturally means that only one source is dispatched
* and the test fails. To fix that, sleep 15 ms before
* calling wl_event_loop_dispatch(). That should be enough
* for the second timer to expire.
*
* https://bugs.freedesktop.org/show_bug.cgi?id=80594
*/
usleep(MSEC_TO_USEC(15));
gettimeofday(&start_time, NULL);
wl_event_loop_dispatch(loop, 20);
gettimeofday(&end_time, NULL);